A-10 Tank Killer You can't usually 'soft' boot your machine with [Ctrl]+[Alt]+[Del] while A-10 is running. But, if you have a bad mission and don't want to save the results of a mission there is a short period while the next part of the program is loading when you can 'soft' boot. After a bad mission but, while the next section is loading, hold down [Ctrl]+[Alt]+[Del]. When you restart the game it will be as if your awful mission never happened.